Schneider AS-5B40002A Modicon 800 Series Voltage Input Module

The Schneider Electric AS-5B40002A is an isolated millivolt voltage input module designed for signal conditioning within Modicon 800 Series I/O assemblies. It converts low-level 0 to 50 mV DC analog signals from field transmitters and transducers into high-level system signals while maintaining galvanic isolation between the input source and backplane logic. Featuring a 10 kHz signal bandwidth, this compact module provides fast dynamic response for precision monitoring in automated process loops.

Signal Conditioning and Bandwidth Performance

The module accepts millivolt-level inputs ranging from 0 to 50 mV DC, making it suitable for low-voltage sensor inputs such as strain gauges, shunt resistors, and specialized instrumentation. Its 10 kHz bandwidth allows processing of rapidly changing signals without introducing significant phase lag or filtering distortion, ensuring high fidelity for fast control loops and transient measurement.

Electrical Isolation and System Integration

Internal isolation circuitry isolates the sensitive field input terminals from common-mode voltage spikes, ground loops, and electrical noise present in industrial environments. The module plugs into designated 800 Series I/O bases, operating directly on low-voltage DC power supplied through the rack assembly. Weighing only 0.08 kg, its lightweight profile reduces physical load on the mounting chassis during high-vibration rack installations.

Frequently Asked Questions

Q: What input signal range does the AS-5B40002A module accept?A: The module is configured specifically for low-level analog signals in the 0 to 50 mV DC range.

Q: What is the primary function of isolation on this input module? A: Galvanic isolation prevents ground loops and protects the controller backplane logic from field-side electrical noise and common-mode voltage surges.